i upgraded my tiny house to a nice one. i got to the menu, where you have to place it, but when i wanted to do so, it told me, that id need 200 woodplanks (which i had in my inventory). i left and went home. my old house disappeared and no new new one appeared... all the items are gone as well, including the storage chest outside (which was packed full with potarrots, theese tomatomelon-things and jade vine flowers... all my money actually). i still have the woodplanks in my inventory and i dont have the option to upgrade to a nice house anymore, so its not just invisible, like the lost animals are. i really have a lot of (huge) bugs, while the host hardly has any, so maybe there is a special issue with players who arent hosting?
I often have a completely black screen after sleeping on my multiplayer server. I can still see my mouse cursor and hear the game, but I'm left to exit to the main menu and reconnect. The other player doesn't have the problem when it occurs to me.